Air conditioner



FIG. 1 is a front/right-side/top perspective view of an air conditionershowing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left-side elevational view thereof; and,

FIG. 5 is a right-side elevational view thereof.

I claim the ornamental design for air conditioner, as shown.